Back support cushion of synthetic foam



FIG. 1 is a front side view of a back support cushion of synthetic foam with convoluted and contoured front surface, showing our new design;

FIG. 2 is a side elevational view thereof, the opposite side being substantially identical;

FIG. 3 is an enlarged detail view of portion 3 in FIG. 2;

FIG. 4 is a top end elevational view thereof;

FIG. 5 is a bottom end elevational view thereof; and,

FIG. 6 is a front plan view thereof.

The rear of the design is flat and unornamented.

The pattern of convoluted foam is fragmentarily shown in FIGS. 1 and 4-6 for ease of illustration and is understood to extend throughout the areas represented. 

The ornamental design for back support cushion of synthetic foam, as shown and described. 